Rib applying machine with movable plough

ABSTRACT

A MACHINE FOR APPLYING A FLANGE OF A RIB, HAVING A FOLD EXTENDING AWAY FROM THE FLANGE, ALONG THE PERIPHERY OF AN INSOLE. THE MACHINE INCORPARATES A PLOUGH THAT IS ENGAGEABLE WITH THE FOLD AS THE RIB EXISTS FROM A MECHANISM THAT APPLIES THE RIB TO THE INSOLE. THE PLOUGH IS MOVABLY MOUNTED BETWEEN A POSITION WHEREIN THE PLOUGH CAN INTERSECT AND MOVE THE FOLD AWAY FROM THE FLANGE AND A   POSITION WHEREIN THE PLOUGH IS OUT OF INTERSECTING RELATIONSHIP WITH RESPECT TO THE FOLD.

Nov. 2, 1971 H. M. LEONHARDT RIB APPLYING MACHINE WITH MOVABLE PLOUGH Filed Jul 'sl, 1970 6 Sheets-Sheet l .I v, wt m m W 9 v A W w W o E mm 1 M q fl QM, M W m. w vw R E r w v 3 a Q m 1 m6 g o O u 0 v wwm d O [.11'. 0 u o A O k o Qw NQ t. O B

Nov. 2, 1971 Filed July 31, 1970 6 Sheets-Sheet 2 Nov. 2, 1971 6 Shets-Sheet 3 Filed July 31, 1970 FIG. I/

1971 H. M. LEONHARDT RIB APPLYING MACHINE WITH MOVABLE PLOUGH Filed July 31, 1970 1971 H. M. LEONHARDT I 3,616,476

RIB APPLYING MACHINE WITH MOVABLE PLOUGH Filed July 31, 1.970 6 Sheets-Sheet 5 FIG"? Nov. 2, 1971 H. M. LEONHARDT RIB APPLYING MACHINE WITH MOVABLE PLOUGH 6 -S'heets-Sheet 6 Filed July 31, 1970 United States. Patent 3,616,476 RIB APPLYING MACHINE WITH MOVABLE PLOUGH Horst M. Leonhardt, Boston, Mass, assignor to Jacob S. Kamborian, Jr., Lincoln, Mass. Filed July 31, 1970, Ser. No. 59,891 Int. Cl. A43d 43/06 US. Cl. 12-20 13 Claims ABSTRACT OF THE DISCLOSURE A machine for applying a flange of a rib, having a fold extending away from the flange, along the periphery of an insole. The machine incorporates a plough that is engageable with the fold as the rib exits from a mechanism that applies the rib to the insole. The plough is movably mounted between a position wherein the plough can intersect and move the fold away from the flange and a position wherein the plough is out of intersecting relationship with respect to the fold.

In Pat. No. 3,493,983 and patent application Ser. No. 881,348 filed Dec. 2, 1969, there are disclosed a machine that incorporates a rib applying mechanism that applies a rib along the periphery of an insole while the insole periphery is moving past the mechanism. The machine is so constructed as to swing the insole as its periphery is moved past the mechanism in such a manner that each insole segment moves past the mechanism in a prescribed direction.

The rib is comprised of a flange that is attached to the insole by the mechanism and a fold extending away from the flange. The mechanism operates in such a manner that it forces the fold against the flange during its applying operation. In subsequently performed operations, the fold is sewn to a shoe upper. In the sewing operation, the fold should extend away from the flange. The machin therefore incorporates a plough that is so located as to intersect the fold as it exits from the mechanism and move the fold away from the flange.

It has been found that, duringcertain portions of the machine cycle, the plough should not be in its intersecting position. At the beginning of the machine cycle, if the plough is in its intersecting position it can impinge against the leading end of the rib and buckle it. When a part of the insole periphery having a relatively small radius curvature moves past the mechanism, the insole is swung in such a manner that the previously applied rib would bear against the plough with an excessive force that would inhibit the movement of the insole and would tend to raise the attached flange from the insole.

This invention is directed to an improvement of the machine of Pat. No. 3,493,983 and patent application Ser. No. 881,348 wherein the plough is movably mounted so that it can be moved between an operative position wherein it can intersect and move the rib fold away from the rib flange and an inoperative position wherein the plough is out of intersecting relationship with respect to the fold.

In the drawings:

FIG. 1 is a side elevation of the machine;

FIG. 2 is a plan view of a head of the machine;

FIG. 3 is a view taken along the line 33 of FIG. 2;

FIG. 4 is a front elevation of a rib strip feeding unit having the plough mounted thereto;

FIG. 5 is a view taken on the line 5-5 of FIG. 4;

FIG. 6 is a section taken on the line 66 of FIG. 2;

FIG. 7 is a view showing the rib applying operation;

FIG. 8 is a cross-section of the rib;

FIG. 9 is a plan view of an insole as it appears in the machine in readiness for the rib applying operation;

3,616,476 Patented Nov. 2, 1971 FIG. 10 is a view of an insole with a rib applied thereto.

FIG. 11 is a view showing the operation of the plough during the rib applying operation;

FIG. 12 is a schematic representation of a portion of the electrical control circuit of the machine; and

FIG. 13 is a schematic representation of a mechanism for operating the plough.

When operating the machine, the operator is intended to face the machine at the right of the machine as seen in FIG. 1. Directions that are toward and away from the operator will respectively be referred to as forward and rearward. Directions that extend to the left or right of the operator will be referred to as lateral.

Referring to FIG. 1, the machine includes a main frame 10 to which is secured a back housing 12 and a front housing 14. A head 16 is pivotally mounted to the back housing 12 at the pins 18 and extends forwardly therefrom so that the front end of the head 16 is disposed above the front housing 14. As may be seen in FIG. 2, the head 16 includes a pair of side walls 20, 22 which are rigidified by means of a front bulkhead 24 and a back bulkhead 26. Mounted to the front end of the head 16 and disposed above the front housing 14 is a rib feeding unit 28. An air operated motor 30 is pivoted at a pin 32 to the frame 10 and has a piston rod 33 that is pivoted to the head 16 so that the head 16 and all the mechanisms supported thereon may be raised or lowered about the pins "18 in response to actuations of the motor 30.

Referring to FIGS. 1, 2 and 6, a main drive shaft 34 is contained within the head 16 and extends lengthwise thereof. The drive shaft 34 is journalled in bearings 36 and 38 which are in turn supported in the bulkheads 24 and 26. A drive roll 40 is secured to the forwardly extending end of the drive shaft 34 so as to be below and in operative relation to the rib feeding unit 28. As seen in FIGS. 5 and 7, the drive roll 40 has a circumferentially extending recess 41 therein. An idler roll 42 is rotatably supported in the machine and is disposed below and in vertical alignment with the drive roll 40. A roller edge gage 44 is supported in the machine rearwardly of the drive roll 40 and the idler roll 42.

Referring to FIGS. 1 and 9, an inner cam plate 46 and an outer cam. plate 48 are located at the top of the front housing 14. The cam plates 46, 48 define between them a guideway 50 along which thrusters 52 and 54 are movably mounted at a level that is above that of the cam plates 46, 48. A slot 56 is formed in the inner cam plate 46 to enable a portion of the idler roll 42 to extend upwardly therethrough.

The idler roll 42 is frustro-conically shaped and is rotatably mounted by means of a pin 58 (FIG. 7) that is rotatable in a bearing (not shown). The pin 58, and hence the axis of rotation of the idler roll 42, is inclined rearwardly and upwardly with the uppermost portion of the periphery of the idler roll 42 lying in a horizontal plane. The peripheral surface of the edge gage 44 extends downwardly to a level that is slightly below the level of the uppermost portion of the idler roll 42.

Referring to FIGS. 1 and 46, an end cap 60 is secured to the front end of the head 16, the rib feed unit 28 being supported on and about the end cap 60. The end cap 60 is essentially a casting having a guideway 62 formed therein. A feed roll 64 is rotatably mounted to the end cap 60 adjacent the outlet end 66 (the right end in FIG. 4) of the guideway 62. A guide member 68, having a curved surface 70 that embraces the upper portion of the feed roll 64, is secured to the end cap 60. A pressure roll 72 is rotatably mounted by a pin 74 to a downwardly extending portion 76 of a lever 78, the lever 78 in turn being pivoted to the end cap 60 by a pin 80 in such a manner that the lever 78 may be pivoted about 3 the pin 80 to urge the pressure roll 72 towards and away from the feed roll 64. The lever 78 is biased by means of a spring 82 so as to urge the pressure roll 72 towards the feed roll 64. The feed roll 64 is disposed above the drive roll 70.

A horizontal slot 84, formed in the end cap 60, serves to contain an upper knife 86 and a lower knife 88, the slot 84 and the knives 86 and 88 being disposed below the rolls 64 and 72. The lower knife 88 is maintained in a fixed position in the end cap 60 and the upper knife 86 is movably contained within the end cap and rests on the lower knife 88-.

A heater 90, having an arcuate surface 92 formed thereon, is located adjacent the drive roll 40. The heater 90 is supported from an arm 94 which is pivotally connected at its upper end to the end cap 60 by a pin 97. The arm 94 is biased in a counterclockwise direction (FIG. 4) by a spring 96 extending between a bracket 98 secured to the end cap 60 and a pin 100 so as to space the heater 90 from the drive roll 40. A stop bolt 102 is threaded into the bracket 98 and extends downwardly to be engageable with the upper portion of the arm 94, thus limiting the extent of counterclockwise rotation of the bracket 98 caused by the spring 96.

Referring to FIGS. 4 and 5, a pin 104 is rotatably mounted in a block 106 that is secured to and depends from the end cap 60. A plough 107 is secured to one end of the pin 104 and is located adjacent the roll 40. The other end of the pin 104 is secured to a link 108. The link 108 is pivoted by a pin 109 to a clevis 110 that is secured to the piston rod 112 of an air operated motor 114. The motor 114 is pivoted to a bracket 116 that is bolted to the end cap 60. A tension spring 118, extending between the pin 109 and the end cap 60, acts to yieldably urge the plough 107 to the FIG. position wherein it is out of alignment with the recess 41 of the roll 40.

(Referring to FIGS. 2 and 6, a shaft 120 is rotatably mounted in the walls 20, 22 of the head 16. Secured to the shaft 120 is a collar 122, and a timing disc 124 is in turn secured to the collar 122 for rotaton in unison with the shaft I120. A friction wheel 126 is engageable with the surface of the timing disc 124 and serves to drive the timing disc 124 and the shaft 120. A housing 128, having a pair of downwardly extending legs 130, 132., is disposed between the bulkheads 24 and 26 of the head 16. The housing legs 130 and 132 are fitted with journals 134 and 136 through which is received the main drive shaft 34. A shaft 138 is rotatably supported in the housing 128 by means of journals 140, 142 and has a rearwardly extending end that protrudes through the bulkhead 26 towards the shaft 120. Secured to the front end of the shaft 138 is a gear 144 which is in constant mesh with a gear 146 which is secured to the main drive shaft 34 by a pin 148', wherefrom it may be seen that, as the drive shaft 34 is rotated, the shaft 138 will also be rotated in the opposite direction. The friction wheel 126 is keyed to the rearwardly extending end of the shaft 138 by means of a key 150 and a slot 152 so that the wheel 126 may rotate in unison with the shaft 138. The housing 128 may swing about the drive shaft 34 laterally so that the friction wheel 126 may be urged towards and into engagement with the surface of the timing disc 124 or away from the timing disc so as to be out of engagement therewith. This movement is eifected by means of an air operated motor 153 (FIG. 2) that is pinned to the sidewall 22 and that has a piston rod (not shown) that is connected to the housing 128. A compression spring 155 is interposed between the sidewall 22 and the housing 128 to normally bias the friction wheel 128 away from the tinting disc 124, the force of the spring 155 being overcome when the motor I153 is actuated.

lReferring to FIG. 6, it may be seen that pinned to the drive shaft 34 and located forwardly of the bulkhead 24 is a gear 157 which meshes with an idler gear 159 that is rotatably mounted to a pin 161, the pin 161 in 4 turn being secured to the bulkhead 24. A shaft 163 is rotatably journalled between the bulkhead 24 and the end cap 60 of the rib feeding unit 28, the forwardly extending end of the shaft 163 being secured pinned to the feed roll 64. A gear 165 is pinned to the shaft 163 and is in mesh with the idler gear 161. Thus it may be seen that rotation of the main drive shaft 34 to rotate the drive roll 40 also causes rotation of the feed roll 64.

Referring to FlGS. 2 and 3, a pair of cams 154 and 156 are mounted to an extension of the shaft 128 that extends through the wall 22 and outwardly thereof. A pair of electric switches 158 and 160, mounted to the wall 22, have actuators that respectively bear against the cams 154 and 156. The cams 154 and 156 are of non-uniform diameter so as to cause the switches 158 and 160 to change their positions during the rotation of the shaft 120 in the manner described below.

In the idle condition of the machine: the piston rod 33 is projected out of the motor 30 to maintain the head 16 in an upper position with the drive roll 40 and the idler roll 42 separated; the thrusters 52 and 54 are maintained in the guideway 50 in their most clockwise position as seen in FIG. 9; the knife 86 is positioned out of cutting relationship with the knife 88; the heater is positioned away from the drive roll 40 by the spring 96; the friction wheel 126 is disengaged from the timing disc 124 by the spring 153; and there is no pressurized air in the motor 114 so that the spring 118 maintains the plough 107 in the FIG. 5 position.

Referring to FIGS. 1, 2 and 8, a rib strip 162 is unwound from a source in the form of a roll 164 and into the rib feeding unit 28 between the rolls 64, 72 with its leading end located at the level of the knives 86, 88. The rib strip, when it is presented to the rib feeding unit 28, has the cross-sectional configuration shown in FIG. 8 that comprises a flange formed of inner and outer flange portions 172 and 174 coated with thermoplastic cement and a fold 176 extending away from the flange portions.

Referring to FIG. 9, an insole 178 is presented to the machine on the inner cam plate 46 so that it rests on the idler roll 42 with one end of the marginal portion to which the rib 162 is to be attached extending tangentially of the gage 44. The insole is then moved rearwardly (leftwardly in FIG. 9) to move the gage 44 rearwardly. The rearward movement of the gage 44 causes the feed roll 64 to be rotated an amount sufficient to feed the leading end of the strip 162 between the heater 90 and the drive roll 40 and between the drive roll 40 and the idler roll 42 so as to be in readiness to be applied to the insole 178 as described below. This is followed by an actuation of the motor 153 to bring the friction wheel 126 into engagement with the timing disc 124.

After this, the motor 30 is actuated to retract its piston rod 33 and thereby lower the head 16 about the pins 1 8 so that the insole 178 and the leading end of the rib strip 162 are gripped between the rolls 40 and 42 as indicated in FIG. 7. At the same time, the heater 90 is moved towards the drive roll 40 by a motor 180 (FIG. 4) to press the rib strip 162 against the drive roll 40.

An electric motor 186 (FIG. 12) is drivingly connectable to the drive shaft 34 in the manner shown in Pat. No. 3,493,983 and patent application Ser. No. 881,348. However, unlike the motor of this patent and patent application, the motor 186 is a two speed motor.

At this time, the motor 186 is drivingly connected to the drive shaft 34 to rotate the drive shaft 34 and the timing disc 124 together with the shaft until the timing disc 124 has swung through a prescribed arc. The rotation of the drive shaft 34 causes rotation of the feed roll 64 and the drive roll 40 to start the rib applying operation of the machine.

Referring to FIG. 12, the electrical control circuit of the machine includes a pair of lines 182 and 184 that are connected to a source of power. The motor 186 is connected, through a control 188 and a relay 190 to a pair of potentiometers 192 and 194. When the coil 196 of the relay 190 is not energized, the motor 186 is connected to the potentiometer 192 through switches 19-8 and 200 and is caused by the potentiometer 192 to rotate at a relatively high speed. When the coil 196 is energized, the switches 198 and 200 are shifted to provide a connection between the potentiometer 194 and the motor 186 so as to rotate the motor 186 at a relatively low speed. The coil 196 is energized when the switch 160 is closed by the cam 156, the switch 160 being open in the idle condition of the machine.

Referring to FIG. 13, pressurized air can be admitted to the motor 114 from a source 202 through a line 204, a valve 206 and a line 208. In the idle condition of the machine, a solenoid 210 is energized to maintain the valve 206 closed. This valve can be opened to admit air to the motor 114 by the deenergization of the solenoid 210. As seen in FIG. 12, the switch 158 is a single pole, double throw switch. In the idle condition of the machine, the switch 158 is maintained by the cam 154 in its lower position wherein the solenoid 210 is energized and the plough 107 is in its idle position.

The rotation of the drive roll 40 causes the idler roll 42 to rotate and move the insole and rib strip so as to force the rib strip 162 against the insole 178 and attach the rib strip to the insole by means of the thermoplastic cement on the rib flange portions 172 and 174, the cement being activated by the heater 90. On any given segment of the insole, the rib strip is attached to the insole in the area where the bottom of the drive roll 40 presses the rib strip against the insole, this area being indicated by the number 212 in FIG. 9. In order for the rib strip to be attached to the insole a desired prescribed distance from the insole periphery, the segment of the insole periphery adjacent the area 212 must be fed in the downward direction, indicated by the number 214 in FIG. 9, that is tangential to the curvature of the insole segment. The rolls 40 and 42, the edge gage 44, and the thrusters 52 and 54 operate during the rotation of the drive rolls 40 so as to swing the insole 1718 on the cam plate 46 in such a manner that each segment of the insole periphery that is adjacent the area 212 is fed in the direction 214. During this operation, the friction wheel 126 rotates the timing disc 124 counterclockwise (FIG. 6), and the operation is terminated when the timing disc has swung through said prescribed arc to close a switch 215.

The closure of the switch 215 causes a motor 216 (FIG. 4) to move the upper knife 86 to the right (FIG. 4) in a cutting stroke to sever the rib strip 162, clamp the leading end of the rib strip located above the knife 86, 88 between a lu-g 218 and an extension 220 of the lever portion 76 and swing the lever 78 clockwise (FIG. 4) about the pin 80 an amount sufiicient to disengage the pressure roll 72 from the rib strip 162 and thereby terminate the feeding of the strip by the feed roll 64. This is followed by a returning of the machine parts to their idle positions with the motor 186 being disconnected from the drive shaft 34 to complete the machine cycle and with the release of the insole-rib assembly of FIG. 10 from the machine. At the end of the machine cycle, a motor 226 (FIG. 2) is operated to cause its piston rod 228 to rotate the shaft 120 so as to return it to its starting position.

From the foregoing it can be seen that the shaft 120 is rotated through a prescribed arc during each machine cycle. At the beginning of each machine cycle, the plough 107 is in the raised FIG. 5 position as stated above, and the motor 186 rotates at a relatively high speed due to the switch 160 being open. Shortly after the commencement of the machine cycle, the rotation of the shaft 120 causes the cam 154 to move the switch 158 from its lower FIG. 12 position to its upper position to thereby deengage the solenoid 210 and thus shift the valve 206 to 6 its open position so as toadmit pressurized air to the motor 114. This causes the motor 114 to lower the plough 114 into a position of alignment with the recess 41 of the roll 40. From FIG. 7 it can be seen that the roll 40 tends to flatten the strip fold 176 against the flange portion 174 when it is applying the strip 162 to the insole 178.

The plough 107, when it is in its lowered position, bears against the inner face of the fold 176 so as to raise it from the strip portion 174 into the position desired for subsequent operations (see FIG. 11). At the beginning of the machine cycle, the plough 107 is in its raised position so as not to interfere with 'and be intersected by the leading end of the rib strip 162 that is being applied to the insole 178.

At a later time in the machine cycle, when the toe end extremity 230 of the insole 178 is approaching the area 212, the rotation of the shaft causes the cam 156 to close the switch to energize the relay 196 and thus cause the potentiometer 194 to operate the motor 186 together with the drive roll 40 and the feed roll 64 at the relatively low speed. The closure of the switch 160 also causes current to flow through the switch 158 to energize the solenoid 210, thus enabling the motor 114 to raise the plough to its upper inoperative position.

Still later in the machine cycle, when the toe end extremity 230 of the insole 1178 has passed the area 212, the rotation of the shaft 120 causes the cam 156 to open the switch 160 thereby enabling the motor 186, the drive roll 40 and the feed roll 64 to resume their high speed operation and also enabling the motor 114 to lower the plought 107 to its lower operative position.

At the end of the machine cycle, the rotation of the shaft 120 causes the cam 154 to return the switch 158 to its lower FIG. 12. position to thereby enable the motor 114 to raise the plough 107 to its upper inoperative position.

The motor 186 is operated at the relatively high speed so that the rib applying operation can take place in as short a time as possible. However, when the periphery of the toe end extremity 230 of the insole 178" which has a relatively small radius of curvature, is presented to the roll 40 at the relatively high speed, the insole has a tendency to not be swung quickly enough by the coaction of the members 40, 42, 44, 52 and 54 as to enable this segment of the periphery to be fed in the direction 214 (FIG. 9).

When the periphery of the toe end extremity 230 of the insole .178 is moving past the area 212, due to its relatively small radius of curvature, it is being swung through such an angle that the fold 176 of the previously applied strip would bear against the plough 107 with such a force as to inhibit the feeding of the insole 178 by the rolls 40, 42 and tend to raise the flange portions 172, 174 off the insole. It is for this reason that the plough is raised to its inoperative position when the rib is applied to the toe end extremity 230* of the insole 178. It has been found that the wide angle of swing of the insole during its movement past the area 2.12 creates a twist in the rib fold 176 as it passes through the recess 41 of the roll 40 so that the fold is reraised by the side 242 (FIG. 5) of the roll 40' as it exits from the roll. Therefore the raising of the plough .197 during the passage of the toe end extremity 231] of the sole 178 past the area 212 does not significantly effect the portion of the rib that is applied to this portion of the insole, with the fold 176 of this portion of the rib being in substantially the same raised position as the remainder of the rib.

I claim:

1. A machine for applying a flange of a rib, having a fold extending away from the flange, along the periphery of an insole comprising: a rib applying mechanism operative to apply the rib along the insole periphery while succeeding segments of the insole periphery are moving past the mechanism in a prescribed direction; a plough located after the mechanism with respect to said direction; and means mounting the plough for movement between an operative position wherein the plough can intersect and move the fold away from the flange as the rib exits from the mechanism and an inoperative position wherein the plough is out of intersecting relationship with respect to the fold.

2. The machine as defined in claim 1 wherein the rib applying mechanism is operative, during a machine cycle, to apply the rib along a prescribed portion of the insole periphery and further comprising: means effective during at least one part of the machine cycle for causing the plough to be in its inoperative position; and means effective desiring the remainder of the machine cycle for causing the plough to be in its operative position.

3. The machine as defined in claim 2 further comprising: a drive mechanism for effecting the movement of the plough between said positions; an actuator means so constructed and arranged as to move during the machine cycle; and means responsive to the movement of the actuator means to cause the drive mechanism to maintain the plough in its inoperative position during said at least one part of the machine cycle and to maintain the plough in its operative position during said remainder of the machine cycle.

4. The machine as defined in claim 2 further comprising: means for causing the plough to be in its in operative position at the beginning of the machine cycle so that the plough will not intersect the leading end of the rib; and means for causing the plough to be in its operative position shortly after the commencement of the machine cycle.

5. The machine as defined in claim 3 further comprising: means so constructing the actuator means as to cause the drive mechanism to maintain the plough in its inoperative position at the beginning of the machine cycle so that the plough will not intersect the leading end of the rib and to cause the drive mechanism to move the plough to its operative position shortly after the commencement of the machine cycle.

6. The machine as defined in claim 2 wherein said prescribed portion of the insole periphery includes a part having a relatively small radius of curvature and further comprising: means for causing the plough to be in its inoperative position during a portion of the machine cycle when said part is moving past the mechanism; and means for causing the plough to be in its operative position in other portions of the machine cycle when other parts of the insole periphery are moving past the mechanism.

7. The machine as defined in claim 6 wherein. the rib applying mechanism is operable at a relatively high speed and a relatively low speed and further comprising: means for causing the rib applying mechanism to operate at the relatively low speed during the first mentioned portion of the machine cycle; and means for causing the rib applying mechanism to operate at the relatively high speed during said other portions of the machine cycle.

8. The machine as defined in claim 3 wherein said prescribed portion of the insole periphery includes a part having a relatively small radius of curvature and further comprising: means so constructing the actuator means as to cause the drive mechanism to maintain the plough in its inoperative position during a portion of the machine cycle when said part is moving past the mechanism and to cause the drive mechanism to maintain the plough in its operative position when other parts of the insole periphery are moving past the mechanism.

9. The machine as defined in claim 8 wherein the rib applying mechanism is operable at a relatively high speed and at a relatively low speed and further comprising: means responsive to the movement of the actuator means, operative concomitantly with the causing of the drive mechanism to maintain the plough in its inoperative position, to cause the rib applying mechanism to operate at the relatively low speed; and means responsive to the movement of the actuator means, operative concomitantly with the causing of the drive mechanism to maintain the plough in its operative position, to cause the rib applying mechanism to operate at the relatively high speed.

10. The machine as defined in claim 2 wherein said prescribed portion of the insole periphery includes a part intermediate its ends having a relatively small radius of curvature, and further comprising: means for causing the plough to be in its inoperative position at the beginning of the machine cycle so that the plough will not intersect the leading end of the rib; means for causing the plough to be in its operative position shortly after the commencement of the machine cycle; means for thereafter causing the plough to he in its inoperative position during an intermediate portion of the machine cycle when said part is moving past the mechanism; and means for thereafter causing the plough to be in its operative position when said part has moved past the mechanism.

11. The machine as defined in claim 3 wherein said prescribed portion of the insole periphery includes a part intermediate its ends having a relatively small radius of curvature and further comprising: means so constructing the actuator means as to cause the drive mechanism to maintain the plough in its inoperative position at the beginning of the machine cycle so that the plough will not intersect the leading end of the rib, to cause the drive mechanism to move the plough to its inoperative position shortly after the commencement of the machine cycle, to thereafter cause the drive mechanism to place the plough to its inoperative position during an intermediate portion of the machine cycle when said part is moving past the mechanism, and to thereafter place the plough in its operative position when said part has moved past the mechanism.

12. The machine as defined in claim 10 wherein the rib applying mechanism is operable at a relatively high speed and a relatively low speed and further comprising: means for causing the rib applying mechanism to operate at the relatively low speed during said intermediate portion of the machine cycle; and means for causing the rib applying mechanism to operate at the relatively high speed during the remainder of the machine cycle.

13. The machine as defined in claim .11 wherein the rib applying mechanism is operable at a relatively high speed and a relatively low speed and further comprising: means so constructing the actuator means as to cause the rib applying mechanism to operate at the relatively low speed during said intermediate portion of the machine cycle and to cause the rib applying mechanism to operate at the relatively high speed during the remainder of the machine cycle.

References Cited UNITED STATES PATENTS 2,635,263 4/1953 Clark 1220 2,748,404 6/1956 Pehrson l2-20 3,493,983 2/1970 Leonhardt et al. 12-20 PATRICK D. LAWSON, Primary Examiner 

